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Non-Contact Encoder for the Automation Industry
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BackgroundAutomation plays an increasing important role in industrial applications. The scope of automation is not only to support human operators in tasks that involve hard and dangerous physical work, but first of all to improve the quality and enhance the capability of the production system itself. To realise these requirements, sensors are used for measurements to control and manage processes.
ApplicationsIn a wide range of applications, particularly in the food, textile, wood and paper industry, the determination of length and speed of hot, sticky or highly sensitive surfaces is often quite difficult. The commonly used shaft encoders with a measuring wheel are not suitable for these applications because of the risk of contamination and damage of the surface. Furthermore the accuracy of a mechanical sensor system is reduced by slippage, which can lead to significant measuring errors in practice.
InnovationThe optical encoders from the company INTACTON offer the possibility of non-contact length and speed measurements without touching the surface. A possible application is cut-to-length control on hot and sticky surfaces. In addition, speed and process control of sensitive goods as they are common in food and textile industry can help to keep the wastage at a minimum level and reduce the production costs.
TechnologyThe measuring principle is based on a correlation method whereby the surface is observed by a camera. Displacement, direction and velocity are analyzed and calculated by comparison of the respective surface pictures. Furthermore the determination of standstill and movement in x and y direction is possible. The installation is straight forward and easy. No further mechanical connections are required. Therefore the sensor provides low installation, service and maintenance costs. The optical sensors from the company INTACTON offer the possibility to realize a non-contact, slip-free process control with low maintenance and service costs.
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